JPH0235371B2 - - Google Patents

Info

Publication number
JPH0235371B2
JPH0235371B2 JP55154291A JP15429180A JPH0235371B2 JP H0235371 B2 JPH0235371 B2 JP H0235371B2 JP 55154291 A JP55154291 A JP 55154291A JP 15429180 A JP15429180 A JP 15429180A JP H0235371 B2 JPH0235371 B2 JP H0235371B2
Authority
JP
Japan
Prior art keywords
layer
coercive force
force layer
information
point
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP55154291A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5778652A (en
Inventor
Shigeru Tsunashima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daido Steel Co Ltd
Canon Inc
Original Assignee
Daido Steel Co Ltd
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daido Steel Co Ltd, Canon Inc filed Critical Daido Steel Co Ltd
Priority to JP55154291A priority Critical patent/JPS5778652A/ja
Priority to AT81109311T priority patent/ATE13784T1/de
Priority to DE8181109311T priority patent/DE3170950D1/de
Priority to EP81109311A priority patent/EP0051296B1/en
Publication of JPS5778652A publication Critical patent/JPS5778652A/ja
Priority to US07/051,163 priority patent/US4799114A/en
Publication of JPH0235371B2 publication Critical patent/JPH0235371B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/16—Layers for recording by changing the magnetic properties, e.g. for Curie-point-writing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
    • G11B11/10504—Recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
    • G11B11/10528—Shaping of magnetic domains, e.g. form, dimensions
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • G11B11/10589—Details
    • G11B11/10591—Details for improving write-in properties, e.g. Curie-point temperature
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Paints Or Removers (AREA)
JP55154291A 1980-11-01 1980-11-01 Thermal magnetic recording carrier and thermal magnetic recording system Granted JPS5778652A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP55154291A JPS5778652A (en) 1980-11-01 1980-11-01 Thermal magnetic recording carrier and thermal magnetic recording system
AT81109311T ATE13784T1 (de) 1980-11-01 1981-10-29 Thermomagnetisches aufzeichnungsmedium und verfahren zur thermomagnetischen aufzeichnung.
DE8181109311T DE3170950D1 (en) 1980-11-01 1981-10-29 A thermomagnetic recording medium and a method of thermomagnetic recording
EP81109311A EP0051296B1 (en) 1980-11-01 1981-10-29 A thermomagnetic recording medium and a method of thermomagnetic recording
US07/051,163 US4799114A (en) 1980-11-01 1987-05-15 Thermomagnetic recording carrier and a method for thermomagnetic recording

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55154291A JPS5778652A (en) 1980-11-01 1980-11-01 Thermal magnetic recording carrier and thermal magnetic recording system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP12372891A Division JPH04228133A (ja) 1991-05-28 1991-05-28 熱磁気記録方法

Publications (2)

Publication Number Publication Date
JPS5778652A JPS5778652A (en) 1982-05-17
JPH0235371B2 true JPH0235371B2 (en]) 1990-08-09

Family

ID=15580925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55154291A Granted JPS5778652A (en) 1980-11-01 1980-11-01 Thermal magnetic recording carrier and thermal magnetic recording system

Country Status (5)

Country Link
US (1) US4799114A (en])
EP (1) EP0051296B1 (en])
JP (1) JPS5778652A (en])
AT (1) ATE13784T1 (en])
DE (1) DE3170950D1 (en])

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657880A3 (en) * 1993-12-06 1995-09-20 Sharp Kk Magneto-optical recording medium and method for its production.
WO2007105393A1 (ja) * 2006-03-14 2007-09-20 Konica Minolta Opto, Inc. 記録ヘッド及び記録装置
WO2007105392A1 (ja) * 2006-03-14 2007-09-20 Konica Minolta Opto, Inc. 記録ヘッド及び記録装置

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5917222A (ja) * 1982-07-21 1984-01-28 Hitachi Ltd 多層磁性薄膜の製造方法
JPH0670858B2 (ja) * 1983-05-25 1994-09-07 ソニー株式会社 光磁気記録媒体とその製法
JPS6025036A (ja) * 1983-07-20 1985-02-07 Kokusai Denshin Denwa Co Ltd <Kdd> 光磁気記録媒体
JPH061564B2 (ja) * 1984-02-22 1994-01-05 株式会社ニコン 光磁気記録媒体
JPS60177449A (ja) * 1984-02-22 1985-09-11 Daicel Chem Ind Ltd 光学式情報記録担体
US4999260A (en) * 1984-05-31 1991-03-12 Canon Kabushiki Kaisha Magneto-optical recording medium comprising a rare-earth-transition metal dispersed in a dielectric
JPS6122452A (ja) * 1984-07-09 1986-01-31 Kokusai Denshin Denwa Co Ltd <Kdd> 光磁気記録媒体
JPS6148150A (ja) * 1984-08-13 1986-03-08 Toshiba Corp 光熱磁気記録媒体
JPS6148149A (ja) * 1984-08-13 1986-03-08 Toshiba Corp 光熱磁気記録媒体
DE3581378D1 (de) * 1984-11-12 1991-02-21 Sumitomo Spec Metals Senkrecht magnetisiertes aufzeichnungsmedium und verfahren zu seiner herstellung.
JPS61117747A (ja) * 1984-11-12 1986-06-05 Nippon Kogaku Kk <Nikon> ２層膜光磁気記録媒体
JPH0816996B2 (ja) * 1986-12-08 1996-02-21 株式会社ニコン 光磁気記録の再生方法及びそれに使用される媒体
JP2521908B2 (ja) * 1985-06-11 1996-08-07 株式会社ニコン オ―バ―ライト可能な光磁気記録方法、それに使用される光磁気記録装置及び光磁気記録媒体、並びに変調方法、変調装置及び光磁気記録媒体
US5239524A (en) * 1985-06-11 1993-08-24 Nikon Corporation Over write capable magnetooptical recording method, and magnetooptical recording apparatus and medium used therefor
US5458987A (en) * 1985-06-11 1995-10-17 Nikon Corporation Multilayered magnetooptical recording medium
US5367507A (en) * 1985-06-11 1994-11-22 Nikon Corporation Over write capable magnetooptical recording method, and magnetooptical recording apparatus and medium used therefor
JPH07105082B2 (ja) * 1985-11-28 1995-11-13 ソニー株式会社 光磁気記録媒体
JPS62137754A (ja) * 1985-12-09 1987-06-20 Canon Inc 光磁気再生方法
JP2579631B2 (ja) * 1986-03-27 1997-02-05 キヤノン株式会社 光磁気記録方法
JPS63237238A (ja) * 1987-03-26 1988-10-03 Canon Inc 光磁気記録媒体および光磁気記録方法
JPS63195845A (ja) * 1987-02-10 1988-08-12 Canon Inc 光磁気記録媒体及び光磁気記録方法
EP0258978B1 (en) 1986-07-08 1998-10-07 Canon Kabushiki Kaisha Magnetooptical recording medium allowing overwriting with two or more magnetic layers and recording method utilizing the same
CA1322408C (en) * 1986-08-20 1993-09-21 Tomiji Tanaka Thermomagnetic recording method applying power modulated laser on a magnetically coupled double layer structure of perpendicular anisotropy film
US5248565A (en) * 1987-01-26 1993-09-28 Mitsubishi Denki Kabushiki Kaisha Optical-thermal magnetic storage medium
US5265073A (en) * 1987-03-13 1993-11-23 Canon Kabushiki Kaisha Overwritable magneto-optical recording medium having two-layer magnetic films wherein one of the films contains one or more of Cu, Ag, Ti, Mn, B, Pt, Si, Ge, Cr and Al, and a method of recording on the same
JPS63249951A (ja) * 1987-04-03 1988-10-17 Mitsubishi Electric Corp 光磁気記録情報担体
JPS63262446A (ja) * 1987-04-17 1988-10-28 Mitsui Petrochem Ind Ltd 非晶質合金薄膜
US5051970A (en) * 1987-05-08 1991-09-24 Nippon Telegraph And Telephone Corporation Magneto-optic recording system with overwrite capability
JPS6452223A (en) * 1987-05-14 1989-02-28 Nippon Telegraph & Telephone Magnetic card
JP2549122B2 (ja) * 1987-07-11 1996-10-30 日立マクセル株式会社 記録媒体及びこれを用いた情報の記録再生方法
US5225289A (en) * 1987-08-25 1993-07-06 Canon Kabushiki Kaisha Opto-magnetic recording medium having plurality of exchange-coupled magnetic layers
DE68926826T2 (de) * 1988-02-22 1996-12-12 Canon Kk Zweischichtiger magneto-optischer Aufzeichnungsträger mit einer Schicht niedriger Koerzitivkraft, bestehend aus Gd und mindestens Tb oder Dy
US5237548A (en) * 1988-06-01 1993-08-17 Hoechst Aktiengesellschaft Magneto-optic recording structure and method
US4977540A (en) * 1988-06-22 1990-12-11 The Regents Of The University Of California Spin glass type associative processor system
EP0348198A3 (en) * 1988-06-23 1991-01-16 Kabushiki Kaisha Toshiba Method of magneto-optically recording and erasing information and magneto-optical information storage medium for carrying out the method
US5233578A (en) * 1988-12-28 1993-08-03 Canon Kabushiki Kaisha Method of recording information on a recording medium having at least two magnetic layers
JPH02223041A (ja) * 1989-02-23 1990-09-05 Nikon Corp 磁性層間の交換結合力が制御されたオーバーライト可能な光磁気記録媒体
JPH02278520A (ja) * 1989-04-19 1990-11-14 Canon Inc 光学的情報記録方法及び光学的情報記録再生装置
US5094925A (en) * 1989-06-30 1992-03-10 Sharp Kabushiki Kaisha Opto-magnetic recording medium
JP2616058B2 (ja) * 1989-11-01 1997-06-04 日本電気株式会社 光磁気ディスク
JP2907896B2 (ja) * 1989-11-01 1999-06-21 日本電気株式会社 光磁気記録媒体の製造方法
US5258237A (en) * 1989-11-14 1993-11-02 Mitsubishi Denki Kabushiki Kaisha Magneto-optic recording medium
JP2956146B2 (ja) * 1990-07-10 1999-10-04 ソニー株式会社 ディスクカートリッジ並びに記録及び／又は再生装置
DE4029874A1 (de) * 1990-09-21 1992-03-26 Basf Ag Magnetooptische datenplatte mit pt-haltiger leseschicht
US5418076A (en) * 1990-11-20 1995-05-23 Canon Kabushiki Kaisha Magnetic-optical recording medium
JP2672895B2 (ja) * 1991-01-16 1997-11-05 三菱電機株式会社 光磁気記録媒体
JP3093340B2 (ja) * 1991-07-23 2000-10-03 キヤノン株式会社 光磁気記録媒体
JPH0644626A (ja) * 1992-08-27 1994-02-18 Canon Inc 磁性薄膜記録媒体
JPH06208736A (ja) * 1992-10-30 1994-07-26 Canon Inc 光磁気記録媒体
JPH06162583A (ja) * 1992-11-19 1994-06-10 Canon Inc 光磁気記録媒体
JPH06309710A (ja) * 1993-04-27 1994-11-04 Nikon Corp 光磁気記録媒体
JP2664330B2 (ja) * 1993-09-02 1997-10-15 富士通株式会社 光磁気記録媒体
US6493164B1 (en) * 1999-03-15 2002-12-10 Kabushiki Kaisha Toshiba Magnetic recording apparatus and method of magnetic recording

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JPS52109193A (en) * 1976-03-11 1977-09-13 Kokusai Denshin Denwa Co Ltd Magnetoooptic memory medium
JPS5424008A (en) * 1977-07-26 1979-02-23 Fujitsu Ltd Magnetic recording and photo reproducing system
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US4293621A (en) * 1978-10-12 1981-10-06 Nippon Hoso Kyokai Recording medium
JPS5923014B2 (ja) * 1979-03-07 1984-05-30 日本放送協会 光磁気記録再生方法
JPS55125536A (en) * 1979-03-16 1980-09-27 Fuji Photo Film Co Ltd Recording medium for vertical magnetic record
JPS55129909A (en) * 1979-03-22 1980-10-08 Olympus Optical Co Ltd Thermomagnetic recording and reproducing device
GB2077065B (en) * 1980-02-23 1985-01-09 Sharp Kk Magnetooptic memory medium
JPS6032331B2 (ja) * 1980-03-12 1985-07-27 ケイディディ株式会社 磁気光学記録媒体
JPS602186B2 (ja) * 1980-12-24 1985-01-19 日本鋼管株式会社 塗装下地用表面処理鋼板

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657880A3 (en) * 1993-12-06 1995-09-20 Sharp Kk Magneto-optical recording medium and method for its production.
WO2007105393A1 (ja) * 2006-03-14 2007-09-20 Konica Minolta Opto, Inc. 記録ヘッド及び記録装置
WO2007105392A1 (ja) * 2006-03-14 2007-09-20 Konica Minolta Opto, Inc. 記録ヘッド及び記録装置
JPWO2007105392A1 (ja) * 2006-03-14 2009-07-30 コニカミノルタオプト株式会社 記録ヘッド及び記録装置
JPWO2007105393A1 (ja) * 2006-03-14 2009-07-30 コニカミノルタオプト株式会社 記録ヘッド及び記録装置
JP2012038416A (ja) * 2006-03-14 2012-02-23 Konica Minolta Opto Inc 記録ヘッド及び記録装置

Also Published As

Publication number Publication date
ATE13784T1 (de) 1985-06-15
JPS5778652A (en) 1982-05-17
US4799114A (en) 1989-01-17
EP0051296A1 (en) 1982-05-12
DE3170950D1 (en) 1985-07-18
EP0051296B1 (en) 1985-06-12

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